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Finding the Fourth Proportional to 518,370.10, 715,264.02 and 288,877.07

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Solution

The fourth proportional to 518,370.10, 715,264.02 and 288,877.07 is: 398,602.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,370.10 : 715,264.02 = 288,877.07 : x
  2. Step 2: Convert to fraction form
    518,370.10/715,264.02 = 288,877.07/x
  3. Step 3: Cross multiply
    518,370.10x = 715,264.02 × 288,877.07
  4. Step 4: Simplify right side
    518,370.10x = 206,623,374,374.02
  5. Step 5: Solve for x
    x = 206,623,374,374.02/518,370.10
  6. Step 6: Final answer
    x = 398,602.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.